java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c -------------------------------------------------------------------------------- This is Ultimate 0.1.24-fea9116 [2019-09-20 13:31:34,912 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-20 13:31:34,914 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-20 13:31:34,928 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-20 13:31:34,928 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-20 13:31:34,930 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-20 13:31:34,932 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-20 13:31:34,940 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-20 13:31:34,942 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-20 13:31:34,946 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-20 13:31:34,947 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-20 13:31:34,948 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-20 13:31:34,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-20 13:31:34,951 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-20 13:31:34,952 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-20 13:31:34,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-20 13:31:34,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-20 13:31:34,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-20 13:31:34,962 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-20 13:31:34,965 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-20 13:31:34,968 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-20 13:31:34,969 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-20 13:31:34,970 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-20 13:31:34,971 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-20 13:31:34,973 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-20 13:31:34,973 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-20 13:31:34,973 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-20 13:31:34,974 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-20 13:31:34,975 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-20 13:31:34,976 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-20 13:31:34,976 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-20 13:31:34,977 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-20 13:31:34,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-20 13:31:34,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-20 13:31:34,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-20 13:31:34,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-20 13:31:34,980 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-20 13:31:34,983 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-20 13:31:34,983 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-20 13:31:34,984 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-20 13:31:34,985 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-20 13:31:34,986 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-20 13:31:35,008 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-20 13:31:35,008 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-20 13:31:35,009 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-20 13:31:35,009 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-20 13:31:35,011 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-20 13:31:35,011 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-20 13:31:35,011 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-20 13:31:35,011 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-20 13:31:35,012 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-20 13:31:35,012 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-20 13:31:35,014 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-20 13:31:35,014 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-20 13:31:35,014 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-20 13:31:35,015 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-20 13:31:35,015 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-20 13:31:35,015 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-20 13:31:35,015 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-20 13:31:35,016 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-20 13:31:35,016 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-20 13:31:35,016 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-20 13:31:35,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-20 13:31:35,017 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-20 13:31:35,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-20 13:31:35,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:35,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-20 13:31:35,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-20 13:31:35,018 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-20 13:31:35,019 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-20 13:31:35,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-20 13:31:35,019 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-20 13:31:35,056 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-20 13:31:35,072 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-20 13:31:35,076 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-20 13:31:35,078 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-20 13:31:35,081 INFO L275 PluginConnector]: CDTParser initialized [2019-09-20 13:31:35,082 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-09-20 13:31:35,153 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4705d6cbc/7169d2e4af544feb946d2eba7d18f28e/FLAGb3f1fd933 [2019-09-20 13:31:35,697 INFO L306 CDTParser]: Found 1 translation units. [2019-09-20 13:31:35,698 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/product-lines/minepump_spec5_product47.cil.c [2019-09-20 13:31:35,715 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4705d6cbc/7169d2e4af544feb946d2eba7d18f28e/FLAGb3f1fd933 [2019-09-20 13:31:36,004 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4705d6cbc/7169d2e4af544feb946d2eba7d18f28e [2019-09-20 13:31:36,014 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-20 13:31:36,016 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-20 13:31:36,017 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:36,017 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-20 13:31:36,021 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-20 13:31:36,022 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,025 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2bb00ac6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36, skipping insertion in model container [2019-09-20 13:31:36,025 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,032 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-20 13:31:36,079 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-20 13:31:36,523 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:36,551 INFO L188 MainTranslator]: Completed pre-run [2019-09-20 13:31:36,679 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-20 13:31:36,722 INFO L192 MainTranslator]: Completed translation [2019-09-20 13:31:36,723 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36 WrapperNode [2019-09-20 13:31:36,723 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-20 13:31:36,724 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-20 13:31:36,724 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-20 13:31:36,724 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-20 13:31:36,734 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,735 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,754 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,754 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,782 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,792 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,798 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36" (1/1) ... [2019-09-20 13:31:36,811 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-20 13:31:36,812 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-20 13:31:36,812 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-20 13:31:36,812 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-20 13:31:36,813 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-20 13:31:36,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-20 13:31:36,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-20 13:31:36,893 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:36,893 INFO L138 BoogieDeclarations]: Found implementation of procedure __automaton_fail [2019-09-20 13:31:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure timeShift [2019-09-20 13:31:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__base [2019-09-20 13:31:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure processEnvironment [2019-09-20 13:31:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:36,894 INFO L138 BoogieDeclarations]: Found implementation of procedure activatePump [2019-09-20 13:31:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure deactivatePump [2019-09-20 13:31:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneAlarm [2019-09-20 13:31:36,895 INFO L138 BoogieDeclarations]: Found implementation of procedure isPumpRunning [2019-09-20 13:31:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure printPump [2019-09-20 13:31:36,896 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterLevel [2019-09-20 13:31:36,897 INFO L138 BoogieDeclarations]: Found implementation of procedure stopSystem [2019-09-20 13:31:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure test [2019-09-20 13:31:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure cleanup [2019-09-20 13:31:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure Specification2 [2019-09-20 13:31:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure setup [2019-09-20 13:31:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure runTest [2019-09-20 13:31:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-20 13:31:36,898 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:36,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:36,899 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:36,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__error_stack_mgt [2019-09-20 13:31:36,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_arg [2019-09-20 13:31:36,900 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac__get_this_argtype [2019-09-20 13:31:36,900 INFO L138 BoogieDeclarations]: Found implementation of procedure select_one [2019-09-20 13:31:36,900 INFO L138 BoogieDeclarations]: Found implementation of procedure select_features [2019-09-20 13:31:36,900 INFO L138 BoogieDeclarations]: Found implementation of procedure select_helpers [2019-09-20 13:31:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure valid_product [2019-09-20 13:31:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure lowerWaterLevel [2019-09-20 13:31:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure waterRise [2019-09-20 13:31:36,901 INFO L138 BoogieDeclarations]: Found implementation of procedure changeMethaneLevel [2019-09-20 13:31:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isMethaneLevelCritical [2019-09-20 13:31:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure printEnvironment [2019-09-20 13:31:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure getWaterLevel [2019-09-20 13:31:36,902 INFO L138 BoogieDeclarations]: Found implementation of procedure isHighWaterSensorDry [2019-09-20 13:31:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-20 13:31:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-20 13:31:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2019-09-20 13:31:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure __automaton_fail [2019-09-20 13:31:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure lowerWaterLevel [2019-09-20 13:31:36,903 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneLevelCritical [2019-09-20 13:31:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure printEnvironment [2019-09-20 13:31:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterSensorDry [2019-09-20 13:31:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure timeShift [2019-09-20 13:31:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump [2019-09-20 13:31:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure deactivatePump [2019-09-20 13:31:36,904 INFO L130 BoogieDeclarations]: Found specification of procedure isPumpRunning [2019-09-20 13:31:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure printPump [2019-09-20 13:31:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure stopSystem [2019-09-20 13:31:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__2 [2019-09-20 13:31:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__3 [2019-09-20 13:31:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment [2019-09-20 13:31:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__base [2019-09-20 13:31:36,905 INFO L130 BoogieDeclarations]: Found specification of procedure isHighWaterLevel [2019-09-20 13:31:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure processEnvironment__wrappee__methaneQuery [2019-09-20 13:31:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure isMethaneAlarm [2019-09-20 13:31:36,906 INFO L130 BoogieDeclarations]: Found specification of procedure activatePump__wrappee__highWaterSensor [2019-09-20 13:31:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-20 13:31:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure waterRise [2019-09-20 13:31:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure changeMethaneLevel [2019-09-20 13:31:36,907 INFO L130 BoogieDeclarations]: Found specification of procedure cleanup [2019-09-20 13:31:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure test [2019-09-20 13:31:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure Specification2 [2019-09-20 13:31:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure setup [2019-09-20 13:31:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure __utac_acc__Specification5_spec__1 [2019-09-20 13:31:36,908 INFO L130 BoogieDeclarations]: Found specification of procedure runTest [2019-09-20 13:31:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure select_helpers [2019-09-20 13:31:36,909 INFO L130 BoogieDeclarations]: Found specification of procedure select_features [2019-09-20 13:31:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure valid_product [2019-09-20 13:31:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-20 13:31:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2019-09-20 13:31:36,910 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-20 13:31:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-20 13:31:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_set [2019-09-20 13:31:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-20 13:31:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-20 13:31:36,911 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-20 13:31:36,912 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-20 13:31:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_free [2019-09-20 13:31:36,913 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-20 13:31:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__exception__cf_handler_reset [2019-09-20 13:31:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~int~X~int~TO~int [2019-09-20 13:31:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-20 13:31:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__error_stack_mgt [2019-09-20 13:31:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_arg [2019-09-20 13:31:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure __utac__get_this_argtype [2019-09-20 13:31:36,914 INFO L130 BoogieDeclarations]: Found specification of procedure select_one [2019-09-20 13:31:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure getWaterLevel [2019-09-20 13:31:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-20 13:31:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2019-09-20 13:31:36,915 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-20 13:31:38,065 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-20 13:31:38,065 INFO L283 CfgBuilder]: Removed 5 assume(true) statements. [2019-09-20 13:31:38,067 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:38 BoogieIcfgContainer [2019-09-20 13:31:38,067 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-20 13:31:38,069 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-20 13:31:38,069 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-20 13:31:38,072 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-20 13:31:38,073 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.09 01:31:36" (1/3) ... [2019-09-20 13:31:38,074 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fff054d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:38, skipping insertion in model container [2019-09-20 13:31:38,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.09 01:31:36" (2/3) ... [2019-09-20 13:31:38,075 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4fff054d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.09 01:31:38, skipping insertion in model container [2019-09-20 13:31:38,075 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.09 01:31:38" (3/3) ... [2019-09-20 13:31:38,077 INFO L109 eAbstractionObserver]: Analyzing ICFG minepump_spec5_product47.cil.c [2019-09-20 13:31:38,117 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-20 13:31:38,126 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-20 13:31:38,144 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-20 13:31:38,173 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-20 13:31:38,173 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-20 13:31:38,173 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-20 13:31:38,173 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-20 13:31:38,174 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-20 13:31:38,174 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-20 13:31:38,174 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-20 13:31:38,174 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-20 13:31:38,196 INFO L276 IsEmpty]: Start isEmpty. Operand 192 states. [2019-09-20 13:31:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2019-09-20 13:31:38,211 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:38,213 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:38,216 INFO L418 AbstractCegarLoop]: === Iteration 1 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:38,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:38,222 INFO L82 PathProgramCache]: Analyzing trace with hash -981984858, now seen corresponding path program 1 times [2019-09-20 13:31:38,225 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:38,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:38,288 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:38,288 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:38,288 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:38,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:38,647 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:38,649 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:38,650 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-20 13:31:38,650 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:38,657 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:38,672 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:38,673 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:38,675 INFO L87 Difference]: Start difference. First operand 192 states. Second operand 2 states. [2019-09-20 13:31:38,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:38,703 INFO L93 Difference]: Finished difference Result 160 states and 188 transitions. [2019-09-20 13:31:38,703 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:38,704 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 59 [2019-09-20 13:31:38,705 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:38,718 INFO L225 Difference]: With dead ends: 160 [2019-09-20 13:31:38,718 INFO L226 Difference]: Without dead ends: 149 [2019-09-20 13:31:38,720 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:38,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2019-09-20 13:31:38,772 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 149. [2019-09-20 13:31:38,774 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 149 states. [2019-09-20 13:31:38,778 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 149 states to 149 states and 176 transitions. [2019-09-20 13:31:38,779 INFO L78 Accepts]: Start accepts. Automaton has 149 states and 176 transitions. Word has length 59 [2019-09-20 13:31:38,780 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:38,780 INFO L475 AbstractCegarLoop]: Abstraction has 149 states and 176 transitions. [2019-09-20 13:31:38,780 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:38,780 INFO L276 IsEmpty]: Start isEmpty. Operand 149 states and 176 transitions. [2019-09-20 13:31:38,784 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2019-09-20 13:31:38,785 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:38,785 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:38,785 INFO L418 AbstractCegarLoop]: === Iteration 2 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:38,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:38,786 INFO L82 PathProgramCache]: Analyzing trace with hash 598368098, now seen corresponding path program 1 times [2019-09-20 13:31:38,786 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:38,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:38,789 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:38,789 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:38,789 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:38,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:38,968 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:38,969 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:38,969 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-20 13:31:38,969 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:38,972 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-20 13:31:38,972 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-20 13:31:38,973 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:38,973 INFO L87 Difference]: Start difference. First operand 149 states and 176 transitions. Second operand 3 states. [2019-09-20 13:31:38,993 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:38,993 INFO L93 Difference]: Finished difference Result 140 states and 164 transitions. [2019-09-20 13:31:38,994 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-20 13:31:38,994 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 60 [2019-09-20 13:31:38,995 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:38,997 INFO L225 Difference]: With dead ends: 140 [2019-09-20 13:31:38,997 INFO L226 Difference]: Without dead ends: 140 [2019-09-20 13:31:38,998 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-20 13:31:38,999 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2019-09-20 13:31:39,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 140. [2019-09-20 13:31:39,012 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2019-09-20 13:31:39,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 164 transitions. [2019-09-20 13:31:39,016 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 164 transitions. Word has length 60 [2019-09-20 13:31:39,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:39,017 INFO L475 AbstractCegarLoop]: Abstraction has 140 states and 164 transitions. [2019-09-20 13:31:39,017 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-20 13:31:39,017 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 164 transitions. [2019-09-20 13:31:39,023 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2019-09-20 13:31:39,025 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:39,025 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:39,026 INFO L418 AbstractCegarLoop]: === Iteration 3 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:39,026 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:39,026 INFO L82 PathProgramCache]: Analyzing trace with hash 75711308, now seen corresponding path program 1 times [2019-09-20 13:31:39,026 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:39,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,031 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:39,031 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,031 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:39,093 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:39,255 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:39,256 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:39,256 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:39,256 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:39,256 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:39,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:39,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:39,257 INFO L87 Difference]: Start difference. First operand 140 states and 164 transitions. Second operand 7 states. [2019-09-20 13:31:39,842 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:39,842 INFO L93 Difference]: Finished difference Result 308 states and 370 transitions. [2019-09-20 13:31:39,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2019-09-20 13:31:39,843 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 64 [2019-09-20 13:31:39,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:39,852 INFO L225 Difference]: With dead ends: 308 [2019-09-20 13:31:39,853 INFO L226 Difference]: Without dead ends: 308 [2019-09-20 13:31:39,853 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2019-09-20 13:31:39,855 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2019-09-20 13:31:39,940 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 300. [2019-09-20 13:31:39,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2019-09-20 13:31:39,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 364 transitions. [2019-09-20 13:31:39,950 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 364 transitions. Word has length 64 [2019-09-20 13:31:39,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:39,951 INFO L475 AbstractCegarLoop]: Abstraction has 300 states and 364 transitions. [2019-09-20 13:31:39,954 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:39,954 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 364 transitions. [2019-09-20 13:31:39,963 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2019-09-20 13:31:39,963 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:39,963 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:39,964 INFO L418 AbstractCegarLoop]: === Iteration 4 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:39,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:39,968 INFO L82 PathProgramCache]: Analyzing trace with hash -1055869647, now seen corresponding path program 1 times [2019-09-20 13:31:39,968 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:39,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,973 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:39,973 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:39,974 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:40,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:40,151 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-20 13:31:40,151 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:40,152 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-09-20 13:31:40,152 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:40,153 INFO L454 AbstractCegarLoop]: Interpolant automaton has 7 states [2019-09-20 13:31:40,153 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2019-09-20 13:31:40,153 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:40,154 INFO L87 Difference]: Start difference. First operand 300 states and 364 transitions. Second operand 7 states. [2019-09-20 13:31:40,968 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:40,969 INFO L93 Difference]: Finished difference Result 499 states and 620 transitions. [2019-09-20 13:31:40,969 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-09-20 13:31:40,969 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2019-09-20 13:31:40,970 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:40,975 INFO L225 Difference]: With dead ends: 499 [2019-09-20 13:31:40,975 INFO L226 Difference]: Without dead ends: 499 [2019-09-20 13:31:40,976 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=43, Invalid=113, Unknown=0, NotChecked=0, Total=156 [2019-09-20 13:31:40,977 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 499 states. [2019-09-20 13:31:41,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 499 to 446. [2019-09-20 13:31:41,011 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 446 states. [2019-09-20 13:31:41,015 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 446 states to 446 states and 533 transitions. [2019-09-20 13:31:41,015 INFO L78 Accepts]: Start accepts. Automaton has 446 states and 533 transitions. Word has length 70 [2019-09-20 13:31:41,016 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,016 INFO L475 AbstractCegarLoop]: Abstraction has 446 states and 533 transitions. [2019-09-20 13:31:41,016 INFO L476 AbstractCegarLoop]: Interpolant automaton has 7 states. [2019-09-20 13:31:41,016 INFO L276 IsEmpty]: Start isEmpty. Operand 446 states and 533 transitions. [2019-09-20 13:31:41,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:31:41,019 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,020 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:41,020 INFO L418 AbstractCegarLoop]: === Iteration 5 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,020 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,020 INFO L82 PathProgramCache]: Analyzing trace with hash -2082867985, now seen corresponding path program 1 times [2019-09-20 13:31:41,021 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,023 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,023 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,024 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:41,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:41,133 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:41,133 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:41,134 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-20 13:31:41,134 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:41,135 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-20 13:31:41,135 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-20 13:31:41,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:41,135 INFO L87 Difference]: Start difference. First operand 446 states and 533 transitions. Second operand 4 states. [2019-09-20 13:31:41,458 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:41,458 INFO L93 Difference]: Finished difference Result 1200 states and 1503 transitions. [2019-09-20 13:31:41,459 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-20 13:31:41,459 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 107 [2019-09-20 13:31:41,459 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:41,468 INFO L225 Difference]: With dead ends: 1200 [2019-09-20 13:31:41,468 INFO L226 Difference]: Without dead ends: 1200 [2019-09-20 13:31:41,468 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-20 13:31:41,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1200 states. [2019-09-20 13:31:41,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1200 to 1174. [2019-09-20 13:31:41,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1174 states. [2019-09-20 13:31:41,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1174 states to 1174 states and 1455 transitions. [2019-09-20 13:31:41,534 INFO L78 Accepts]: Start accepts. Automaton has 1174 states and 1455 transitions. Word has length 107 [2019-09-20 13:31:41,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,535 INFO L475 AbstractCegarLoop]: Abstraction has 1174 states and 1455 transitions. [2019-09-20 13:31:41,535 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-20 13:31:41,535 INFO L276 IsEmpty]: Start isEmpty. Operand 1174 states and 1455 transitions. [2019-09-20 13:31:41,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:31:41,540 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,541 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:41,541 INFO L418 AbstractCegarLoop]: === Iteration 6 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,541 INFO L82 PathProgramCache]: Analyzing trace with hash -1842327856, now seen corresponding path program 1 times [2019-09-20 13:31:41,542 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,545 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,545 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,545 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:41,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:41,624 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:41,624 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:41,624 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-20 13:31:41,624 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:41,625 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-20 13:31:41,625 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-20 13:31:41,626 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-20 13:31:41,626 INFO L87 Difference]: Start difference. First operand 1174 states and 1455 transitions. Second operand 6 states. [2019-09-20 13:31:41,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:41,666 INFO L93 Difference]: Finished difference Result 1216 states and 1507 transitions. [2019-09-20 13:31:41,667 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-20 13:31:41,667 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 107 [2019-09-20 13:31:41,667 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:41,675 INFO L225 Difference]: With dead ends: 1216 [2019-09-20 13:31:41,676 INFO L226 Difference]: Without dead ends: 1216 [2019-09-20 13:31:41,676 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-09-20 13:31:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1216 states. [2019-09-20 13:31:41,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1216 to 1204. [2019-09-20 13:31:41,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1204 states. [2019-09-20 13:31:41,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1204 states to 1204 states and 1487 transitions. [2019-09-20 13:31:41,727 INFO L78 Accepts]: Start accepts. Automaton has 1204 states and 1487 transitions. Word has length 107 [2019-09-20 13:31:41,728 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,728 INFO L475 AbstractCegarLoop]: Abstraction has 1204 states and 1487 transitions. [2019-09-20 13:31:41,728 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-20 13:31:41,728 INFO L276 IsEmpty]: Start isEmpty. Operand 1204 states and 1487 transitions. [2019-09-20 13:31:41,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2019-09-20 13:31:41,731 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,732 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:41,732 INFO L418 AbstractCegarLoop]: === Iteration 7 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,732 INFO L82 PathProgramCache]: Analyzing trace with hash 85944846, now seen corresponding path program 1 times [2019-09-20 13:31:41,732 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,734 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,735 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,735 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,735 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:41,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:41,869 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:41,870 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:41,870 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-09-20 13:31:41,870 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:41,871 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-09-20 13:31:41,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-09-20 13:31:41,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:41,871 INFO L87 Difference]: Start difference. First operand 1204 states and 1487 transitions. Second operand 8 states. [2019-09-20 13:31:41,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:41,918 INFO L93 Difference]: Finished difference Result 997 states and 1218 transitions. [2019-09-20 13:31:41,918 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2019-09-20 13:31:41,918 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 107 [2019-09-20 13:31:41,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:41,924 INFO L225 Difference]: With dead ends: 997 [2019-09-20 13:31:41,925 INFO L226 Difference]: Without dead ends: 997 [2019-09-20 13:31:41,925 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-09-20 13:31:41,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 997 states. [2019-09-20 13:31:41,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 997 to 997. [2019-09-20 13:31:41,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 997 states. [2019-09-20 13:31:41,974 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 997 states to 997 states and 1218 transitions. [2019-09-20 13:31:41,975 INFO L78 Accepts]: Start accepts. Automaton has 997 states and 1218 transitions. Word has length 107 [2019-09-20 13:31:41,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:41,976 INFO L475 AbstractCegarLoop]: Abstraction has 997 states and 1218 transitions. [2019-09-20 13:31:41,976 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-09-20 13:31:41,976 INFO L276 IsEmpty]: Start isEmpty. Operand 997 states and 1218 transitions. [2019-09-20 13:31:41,979 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2019-09-20 13:31:41,979 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:41,979 INFO L407 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:41,980 INFO L418 AbstractCegarLoop]: === Iteration 8 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:41,980 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:41,980 INFO L82 PathProgramCache]: Analyzing trace with hash 1945052595, now seen corresponding path program 1 times [2019-09-20 13:31:41,980 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:41,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,983 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:41,983 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:41,983 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:42,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:42,165 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2019-09-20 13:31:42,167 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-20 13:31:42,167 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2019-09-20 13:31:42,167 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:42,168 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-09-20 13:31:42,168 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-09-20 13:31:42,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2019-09-20 13:31:42,175 INFO L87 Difference]: Start difference. First operand 997 states and 1218 transitions. Second operand 9 states. [2019-09-20 13:31:43,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:43,410 INFO L93 Difference]: Finished difference Result 1941 states and 2377 transitions. [2019-09-20 13:31:43,410 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2019-09-20 13:31:43,410 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 111 [2019-09-20 13:31:43,411 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:43,423 INFO L225 Difference]: With dead ends: 1941 [2019-09-20 13:31:43,423 INFO L226 Difference]: Without dead ends: 1941 [2019-09-20 13:31:43,424 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=79, Invalid=263, Unknown=0, NotChecked=0, Total=342 [2019-09-20 13:31:43,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1941 states. [2019-09-20 13:31:43,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1941 to 1716. [2019-09-20 13:31:43,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1716 states. [2019-09-20 13:31:43,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1716 states to 1716 states and 2065 transitions. [2019-09-20 13:31:43,510 INFO L78 Accepts]: Start accepts. Automaton has 1716 states and 2065 transitions. Word has length 111 [2019-09-20 13:31:43,511 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:43,511 INFO L475 AbstractCegarLoop]: Abstraction has 1716 states and 2065 transitions. [2019-09-20 13:31:43,511 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-09-20 13:31:43,511 INFO L276 IsEmpty]: Start isEmpty. Operand 1716 states and 2065 transitions. [2019-09-20 13:31:43,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 171 [2019-09-20 13:31:43,515 INFO L399 BasicCegarLoop]: Found error trace [2019-09-20 13:31:43,515 INFO L407 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-20 13:31:43,515 INFO L418 AbstractCegarLoop]: === Iteration 9 === [__automaton_failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-20 13:31:43,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,516 INFO L82 PathProgramCache]: Analyzing trace with hash -451795391, now seen corresponding path program 1 times [2019-09-20 13:31:43,516 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-20 13:31:43,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,518 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-20 13:31:43,518 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-20 13:31:43,519 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-20 13:31:43,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-20 13:31:43,699 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 22 proven. 7 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2019-09-20 13:31:43,699 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-20 13:31:43,699 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-20 13:31:43,700 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 171 with the following transitions: [2019-09-20 13:31:43,705 INFO L207 CegarAbsIntRunner]: [50], [51], [52], [56], [59], [92], [108], [112], [113], [114], [117], [119], [125], [129], [132], [133], [134], [143], [147], [151], [154], [157], [159], [165], [167], [170], [195], [197], [202], [205], [206], [208], [213], [215], [216], [217], [218], [219], [220], [224], [227], [231], [237], [266], [270], [273], [277], [278], [281], [282], [283], [285], [286], [287], [289], [292], [294], [297], [300], [309], [311], [312], [315], [317], [320], [327], [330], [331], [332], [356], [358], [359], [377], [378], [428], [429], [439], [447], [448], [449], [450], [451], [452], [453], [454], [455], [489], [490], [493], [494], [495], [496], [497], [498], [503], [504], [507], [508], [509], [510], [511], [512], [513], [514], [515], [516], [517], [518], [519], [520], [525], [526], [527], [528], [529], [530], [531], [533], [534], [535], [536], [539], [540], [543], [544], [545], [547], [548], [553], [554], [555] [2019-09-20 13:31:43,773 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-20 13:31:43,773 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-20 13:31:43,907 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-20 13:31:43,908 INFO L272 AbstractInterpreter]: Visited 2 different actions 2 times. Never merged. Never widened. Performed 69 root evaluator evaluations with a maximum evaluation depth of 0. Performed 69 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 128 variables. [2019-09-20 13:31:43,914 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-20 13:31:43,915 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-20 13:31:44,023 INFO L219 lantSequenceWeakener]: Could never weaken! [2019-09-20 13:31:44,023 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-20 13:31:44,035 INFO L420 sIntCurrentIteration]: We unified 169 AI predicates to 169 [2019-09-20 13:31:44,035 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-20 13:31:44,036 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-20 13:31:44,036 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [11] total 11 [2019-09-20 13:31:44,036 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-20 13:31:44,037 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-20 13:31:44,037 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-20 13:31:44,038 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:44,038 INFO L87 Difference]: Start difference. First operand 1716 states and 2065 transitions. Second operand 2 states. [2019-09-20 13:31:44,038 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-20 13:31:44,038 INFO L93 Difference]: Finished difference Result 2 states and 1 transitions. [2019-09-20 13:31:44,039 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-20 13:31:44,039 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 170 [2019-09-20 13:31:44,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-20 13:31:44,039 INFO L225 Difference]: With dead ends: 2 [2019-09-20 13:31:44,039 INFO L226 Difference]: Without dead ends: 0 [2019-09-20 13:31:44,039 INFO L636 BasicCegarLoop]: 0 DeclaredPredicates, 169 GetRequests, 169 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-20 13:31:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-20 13:31:44,040 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-20 13:31:44,040 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-20 13:31:44,040 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-20 13:31:44,040 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 170 [2019-09-20 13:31:44,040 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-20 13:31:44,041 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-20 13:31:44,041 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-20 13:31:44,041 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-20 13:31:44,041 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-20 13:31:44,046 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.09 01:31:44 BoogieIcfgContainer [2019-09-20 13:31:44,047 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-20 13:31:44,050 INFO L168 Benchmark]: Toolchain (without parser) took 8032.61 ms. Allocated memory was 136.3 MB in the beginning and 364.4 MB in the end (delta: 228.1 MB). Free memory was 82.4 MB in the beginning and 311.5 MB in the end (delta: -229.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:31:44,051 INFO L168 Benchmark]: CDTParser took 0.25 ms. Allocated memory is still 136.3 MB. Free memory is still 101.9 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:31:44,053 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.49 ms. Allocated memory was 136.3 MB in the beginning and 197.7 MB in the end (delta: 61.3 MB). Free memory was 82.4 MB in the beginning and 161.5 MB in the end (delta: -79.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:44,054 INFO L168 Benchmark]: Boogie Preprocessor took 87.98 ms. Allocated memory is still 197.7 MB. Free memory was 161.5 MB in the beginning and 157.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:44,056 INFO L168 Benchmark]: RCFGBuilder took 1255.62 ms. Allocated memory is still 197.7 MB. Free memory was 157.7 MB in the beginning and 69.8 MB in the end (delta: 87.9 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. [2019-09-20 13:31:44,057 INFO L168 Benchmark]: TraceAbstraction took 5978.15 ms. Allocated memory was 197.7 MB in the beginning and 364.4 MB in the end (delta: 166.7 MB). Free memory was 69.8 MB in the beginning and 311.5 MB in the end (delta: -241.7 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-20 13:31:44,066 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.25 ms. Allocated memory is still 136.3 MB. Free memory is still 101.9 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 706.49 ms. Allocated memory was 136.3 MB in the beginning and 197.7 MB in the end (delta: 61.3 MB). Free memory was 82.4 MB in the beginning and 161.5 MB in the end (delta: -79.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 87.98 ms. Allocated memory is still 197.7 MB. Free memory was 161.5 MB in the beginning and 157.7 MB in the end (delta: 3.8 MB). Peak memory consumption was 3.8 MB. Max. memory is 7.1 GB. * RCFGBuilder took 1255.62 ms. Allocated memory is still 197.7 MB. Free memory was 157.7 MB in the beginning and 69.8 MB in the end (delta: 87.9 MB). Peak memory consumption was 87.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5978.15 ms. Allocated memory was 197.7 MB in the beginning and 364.4 MB in the end (delta: 166.7 MB). Free memory was 69.8 MB in the beginning and 311.5 MB in the end (delta: -241.7 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 44]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 42 procedures, 248 locations, 1 error locations. SAFE Result, 5.8s OverallTime, 9 OverallIterations, 3 TraceHistogramMax, 3.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 1581 SDtfs, 1173 SDslu, 3521 SDs, 0 SdLazy, 1750 SolverSat, 325 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 256 GetRequests, 206 SyntacticMatches, 0 SemanticMatches, 50 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 72 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=1716occurred in iteration=8, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 1.0 AbsIntWeakeningRatio, 0.8106508875739645 AbsIntAvgWeakeningVarsNumRemoved, 0.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 9 MinimizatonAttempts, 324 StatesRemovedByMinimization, 5 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.0s InterpolantComputationTime, 855 NumberOfCodeBlocks, 855 NumberOfCodeBlocksAsserted, 9 NumberOfCheckSat, 846 ConstructedInterpolants, 0 QuantifiedInterpolants, 142708 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 9 InterpolantComputations, 8 PerfectInterpolantSequences, 67/74 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...